Where we talk about $$, also say mention that PIDs are not safe to use for

generating temporary file names, and point people to mktemp(1) instead.

5 files changed, 34 insertions, 13 deletions

diff --git a/bin/csh/csh.1 b/bin/csh/csh.1
index 3fe55c5bd8a..ad9bc4cd76e 100644
--- a/bin/csh/csh.1
+++ b/bin/csh/csh.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: csh.1,v 1.36 2000/04/17 02:32:41 aaron Exp $
+.\"	$OpenBSD: csh.1,v 1.37 2000/10/19 18:29:26 aaron Exp $
 .\"	$NetBSD: csh.1,v 1.10 1995/03/21 09:02:35 cgd Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
@@ -1068,6 +1068,11 @@ if the current input filename is known,
 if it is not.
 .It \&$\&$\&
 Substitute the (decimal) process number of the (parent) shell.
+Do
+.Em NOT
+use this mechanism for generating temporary file names; see
+.Xr mktemp 1
+instead.
 .It $!
 Substitute the (decimal) process number of the last background process
 started by this shell.
diff --git a/bin/ksh/ksh.1 b/bin/ksh/ksh.1
index 99810bf5d96..86cf8b1d936 100644
--- a/bin/ksh/ksh.1
+++ b/bin/ksh/ksh.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: ksh.1,v 1.35 2000/07/06 05:42:41 aaron Exp $
+.\"	$OpenBSD: ksh.1,v 1.36 2000/10/19 18:29:27 aaron Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
 .\"     The Regents of the University of California.  All rights reserved.
@@ -1241,8 +1241,12 @@ The number of positional parameters (i.e., $1, $2, etc.).
 .It Ev \&$
 The process ID of the shell, or the
 .Tn PID
-of the original shell if it is a
-subshell.
+of the original shell if it is a subshell.
+Do
+.Em NOT
+use this mechanism for generating temporary file names; see
+.Xr mktemp 1
+instead.
 .It Ev \&-
 The concatenation of the current single letter options (see
 .Ic set
diff --git a/bin/ksh/ksh.1tbl b/bin/ksh/ksh.1tbl
index 074a3bfb593..3da8383d05e 100644
--- a/bin/ksh/ksh.1tbl
+++ b/bin/ksh/ksh.1tbl
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: ksh.1tbl,v 1.35 2000/07/06 05:42:41 aaron Exp $
+.\"	$OpenBSD: ksh.1tbl,v 1.36 2000/10/19 18:29:27 aaron Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
 .\"     The Regents of the University of California.  All rights reserved.
@@ -1241,8 +1241,12 @@ The number of positional parameters (i.e., $1, $2, etc.).
 .It Ev \&$
 The process ID of the shell, or the
 .Tn PID
-of the original shell if it is a
-subshell.
+of the original shell if it is a subshell.
+Do
+.Em NOT
+use this mechanism for generating temporary file names; see
+.Xr mktemp 1
+instead.
 .It Ev \&-
 The concatenation of the current single letter options (see
 .Ic set
diff --git a/bin/ksh/sh.1 b/bin/ksh/sh.1
index 4d3c1aab0a1..1df84a30a4f 100644
--- a/bin/ksh/sh.1
+++ b/bin/ksh/sh.1
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sh.1,v 1.19 2000/03/21 14:06:55 aaron Exp $
+.\"	$OpenBSD: sh.1,v 1.20 2000/10/19 18:29:28 aaron Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
 .\"     The Regents of the University of California.  All rights reserved.
@@ -1069,8 +1069,12 @@ The number of positional parameters (i.e., $1, $2, etc.).
 .It Ev \&$
 The process ID of the shell, or the
 .Tn PID
-of the original shell if it is a
-subshell.
+of the original shell if it is a subshell.
+Do
+.Em NOT
+use this mechanism for generating temporary file names; see
+.Xr mktemp 1
+instead.
 .It Ev \&-
 The concatenation of the current single letter options (see
 .Ic set
diff --git a/bin/ksh/sh.1tbl b/bin/ksh/sh.1tbl
index f558a29d13c..e944244389b 100644
--- a/bin/ksh/sh.1tbl
+++ b/bin/ksh/sh.1tbl
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sh.1tbl,v 1.19 2000/03/21 14:06:55 aaron Exp $
+.\"	$OpenBSD: sh.1tbl,v 1.20 2000/10/19 18:29:28 aaron Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
 .\"     The Regents of the University of California.  All rights reserved.
@@ -1069,8 +1069,12 @@ The number of positional parameters (i.e., $1, $2, etc.).
 .It Ev \&$
 The process ID of the shell, or the
 .Tn PID
-of the original shell if it is a
-subshell.
+of the original shell if it is a subshell.
+Do
+.Em NOT
+use this mechanism for generating temporary file names; see
+.Xr mktemp 1
+instead.
 .It Ev \&-
 The concatenation of the current single letter options (see
 .Ic set